CN216959421U - Double-backup power panel for vehicle-mounted firewall equipment - Google Patents
Double-backup power panel for vehicle-mounted firewall equipment Download PDFInfo
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- CN216959421U CN216959421U CN202220488067.4U CN202220488067U CN216959421U CN 216959421 U CN216959421 U CN 216959421U CN 202220488067 U CN202220488067 U CN 202220488067U CN 216959421 U CN216959421 U CN 216959421U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model relates to the field of vehicle-mounted firewall equipment, in particular to a double-backup power panel for the vehicle-mounted firewall equipment, which comprises a panel and a circuit board which are connected with each other, wherein one end of the circuit board is provided with a power supply connector, and the other end of the circuit board is provided with an output connector; the power supply connector is respectively connected with the first power circuit and the second power circuit; the first power supply circuit and the second power supply circuit are connected with the output connector through the selection circuit, when one path of power supply fails, the diode or gate selection circuit can select normal voltage output power supply according to the voltage, an indicator lamp is used for alarming, and uninterrupted operation of equipment is guaranteed. Meanwhile, the under-voltage detection circuit arranged on the power panel can alarm through the indicating lamp to remind a user of under-voltage after the voltage of the power supply is reduced to a certain degree.
Description
Technical Field
The utility model relates to the field of vehicle-mounted firewall equipment, in particular to a double-backup power panel for the vehicle-mounted firewall equipment.
Background
The vehicle-mounted firewall equipment is a firewall deployed at the boundary of the interface between the rail vehicle equipment and an external system, establishes an industrial network communication white environment by applying a white list and intelligent learning technology, only allows normal service data to pass through, prevents any unauthorized access from outside a safety area, effectively inhibits the propagation and diffusion of viruses and trojans in an industrial control network, and ensures the safety of rail transit vehicles. In view of the importance of the device, in order to avoid the power failure of the device caused by the failure of the conventional power supply, it is urgently needed to provide a power panel with double backup and hot switching in the field to ensure the uninterrupted operation of the device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-backup power panel for a vehicle-mounted firewall device, so as to solve the problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a double-backup power panel for vehicle-mounted firewall equipment comprises a panel and a circuit board which are connected with each other, wherein one end of the circuit board is provided with a power supply connector, and the other end of the circuit board is provided with an output connector; the power supply connector is respectively connected with the first power circuit and the second power circuit; the first power supply circuit and the second power supply circuit are connected with the output connector through a selection circuit;
the first power supply circuit comprises a first primary protection filter circuit, a first secondary protection filter circuit and a first power supply module which are connected in sequence; the second power supply circuit comprises a second primary protection filter circuit, a second secondary protection filter circuit and a second power supply module which are connected in sequence;
the first secondary protection filter circuit and the second secondary protection filter circuit are respectively connected with the undervoltage detection circuit; the undervoltage detection circuit, the first power supply module and the second power supply module are respectively connected with an indication alarm circuit.
Preferably, the indication alarm circuit is provided with an indicator light, and the panel is provided with the indicator light and a reserved hole position of the power supply connector.
Preferably, the first power module and the second power module are DC-DC conversion power supplies.
Preferably, the selection circuit is a diode or gate selection circuit.
The beneficial effects of the utility model are:
the utility model provides a double-backup power panel for a vehicle-mounted firewall device, which provides a double-backup and hot-switching power panel for the vehicle-mounted firewall device, two paths of power supplies on the power panel are simultaneously electrified, when one path of power supply has a problem, a diode or gate selection circuit can select normal voltage to output power according to the voltage, an indicator lamp is used for alarming, and the uninterrupted operation of the device is ensured. Meanwhile, the under-voltage detection circuit arranged on the power panel can alarm through the indicating lamp to remind a user of under-voltage after the voltage of the power supply is reduced to a certain degree.
Drawings
FIG. 1 is a schematic structural diagram of a dual backup power board according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the operating principle of the dual backup power board in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model provides a double-backup power panel for a vehicle-mounted firewall device, which comprises a panel and a circuit board which are connected with each other, wherein one end of the circuit board is provided with a power supply connector, and the other end of the circuit board is provided with an output connector; the power supply connector is respectively connected with the first power circuit and the second power circuit; the first power supply circuit and the second power supply circuit are connected with the output connector through a selection circuit;
the first power supply circuit comprises a first primary protection filter circuit, a first secondary protection filter circuit and a first power supply module which are connected in sequence; the second power supply circuit comprises a second primary protection filter circuit, a second secondary protection filter circuit and a second power supply module which are connected in sequence;
the first secondary protection filter circuit and the second secondary protection filter circuit are respectively connected with the undervoltage detection circuit; the undervoltage detection circuit, the first power supply module and the second power supply module are respectively connected with an indication alarm circuit.
As shown in fig. 1, in this embodiment, the protection filter circuit 101, the undervoltage detection circuit 102, the power supply connector 103, the output connector 104, the power module 105, and other parts are all soldered on the circuit board 100. The power supply connector 103 is connected with a power supply, the output connector 104 is connected with the vehicle-mounted firewall equipment, and the indicating alarm circuit is provided with an indicating lamp 106 for indicating the states of the power supply and the two power supply modules. The panel 200 is connected with the circuit board 100 through screws, and holes are reserved in the panel 200, so that the power supply connector 103 and the indicator lamp 106 can be exposed conveniently. The power board structure is a standard 3U case single board structure and can be matched with a 3U case for use.
The basic working principle of the power panel in this embodiment is as shown in fig. 2, a power supply connector is connected with a direct current 110V voltage, and the voltage is supplied to a power module after passing through a two-stage protection filter (EMC) circuit, so as to perform DC-DC (direct current to direct current) conversion and convert the voltage into DC5V, wherein the EMC circuit and the DC-DC conversion power supply are both two sets of circuits which are the same, the output DC5V is output through an or gate selection circuit of a diode, and when any one set of circuit has a problem, a corresponding indicator light on a panel is turned off through an indication alarm circuit to serve as a fault indication. And as long as one set of power supply circuit is kept normal, the power supply board can ensure that the output DC5V of the power supply board is normal. In addition, the undervoltage detection circuit can enable a fault red light to be turned on through the indication alarm circuit after the power supply voltage drops to 65V, and the undervoltage detection circuit reminds a user of undervoltage.
It should be noted that the settings of the basic circuits such as the protection filter circuit, the under-voltage detection circuit, the indication alarm circuit, etc. are all the prior art that can be grasped by those skilled in the art, and are not described herein again.
By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:
the utility model provides a double-backup power panel for a vehicle-mounted firewall device, which provides a double-backup and hot-switching power panel for the vehicle-mounted firewall device, two paths of power supplies on the power panel are simultaneously electrified, when one path of power supply has a problem, a diode or gate selection circuit can select normal voltage to output power according to the voltage, an indicator lamp is used for alarming, and the uninterrupted operation of the device is ensured. Meanwhile, the under-voltage detection circuit arranged on the power panel can alarm through the indicating lamp to remind a user of under-voltage after the voltage of the power supply is reduced to a certain degree.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and adaptations can be made without departing from the principle of the present invention, and such modifications and adaptations should also be considered to be within the scope of the present invention.
Claims (4)
1. A double-backup power panel for vehicle-mounted firewall equipment is characterized by comprising a panel and a circuit board which are connected with each other, wherein one end of the circuit board is provided with a power supply connector, and the other end of the circuit board is provided with an output connector; the power supply connector is respectively connected with the first power circuit and the second power circuit; the first power supply circuit and the second power supply circuit are connected with the output connector through a selection circuit;
the first power supply circuit comprises a first primary protection filter circuit, a first secondary protection filter circuit and a first power supply module which are connected in sequence; the second power supply circuit comprises a second primary protection filter circuit, a second secondary protection filter circuit and a second power supply module which are connected in sequence;
the first secondary protection filter circuit and the second secondary protection filter circuit are respectively connected with the undervoltage detection circuit; the undervoltage detection circuit, the first power supply module and the second power supply module are respectively connected with an indication alarm circuit.
2. The dual-backup power panel for the vehicle-mounted firewall device according to claim 1, wherein an indicator lamp is arranged on the indication alarm circuit, and the panel is provided with the indicator lamp and a reserved hole of the power supply connector.
3. The dual-backup power board for the vehicle-mounted firewall device according to claim 1, wherein the first power module and the second power module are DC-DC conversion power supplies.
4. The dual-backup power board for the vehicle-mounted firewall device according to claim 1, wherein the selection circuit is a diode or gate selection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220488067.4U CN216959421U (en) | 2022-03-08 | 2022-03-08 | Double-backup power panel for vehicle-mounted firewall equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220488067.4U CN216959421U (en) | 2022-03-08 | 2022-03-08 | Double-backup power panel for vehicle-mounted firewall equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216959421U true CN216959421U (en) | 2022-07-12 |
Family
ID=82295190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220488067.4U Active CN216959421U (en) | 2022-03-08 | 2022-03-08 | Double-backup power panel for vehicle-mounted firewall equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216959421U (en) |
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2022
- 2022-03-08 CN CN202220488067.4U patent/CN216959421U/en active Active
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| GR01 | Patent grant |